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(No Model.) *1 3 Sheets-Sheet 1. S. .HSCHEB ELECTRIC 01300K.

No. 595,911 Patented Deo. 21,1897.

ATTORNEYS (No Model.) 3 Sheets-Sheet 3.

s. FISCHER. ELECTRIC CLCCLQ No. 595.911i Patented 1390.21, 1897.

UNITED STATES PATENT SIGISMUND FISCHER, OF NEW YORK, N. Y., ASSIGNOR TOTHE FISCHER ELECTRIC CLOCK COMPANY, OF SAME PLACE.

ELECTRIC CLOCK.

SPECIFICATION forming part of Letters Patent No. 595,911, dated December21, 1897.

Application filed October 21,1896. Serial No. 609,553. (No model.)

Be it known that I, SIGISMUND FISCHER, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improvements in Electric Clocks, of which thefollowing is a specication.

This invention has reference to certain improvements in theI electricclock for which Letters Patent No. 555,313 were granted to meheretofore, dated February 25, 1896, said improvements being designedwith the object that the clock can be used as a mantel-clock, in whichall the parts are arranged in a smaller compass, the battery located inthe base of the clock, and both the going-train and the hour andhalf-hour striking train are operated electrically and considerablysimplified, so that the clock can be sold at a greatly-reduced price ascompared to electric clocks heretofore in the market.

The invention consists of an electric clock in which the pendulum isdriven by electric impulses imparted to it by a primary battery, whichoperates the going-train and the striking mechanism,the latter being soconstructed that the full hours, as well as the half-hours, are struckby the action of a striking-wheel, striking-arm, and striking-fingeroperated by the going-train of the clock, in connection with a notchedwheel on the main ratchetwheel of the going-train, by which and thestriking-finger a so-called slow stroke is imparted to the strikingmechanism.

The invention consists, further, of certain improvements in thegoing-train of the electric clock in which no eseapement is elnployed,whereby the hands of such clock can be set independently of the goingand striking trains.

The invention consists, further, of certain details of construction andcombination of parts, w rich will be fully described hereinafter andfinally pointed out in the claims.

In the accompanying drawings, Figure l represents a front elevation ofmy improved electric clock arranged in the form of a mantel-clock. Fig.2 is a rear elevation of the same, partly in vertical transverse sectionthrough the base, in which the primary battery is arranged.

Fig. 3 is a side elevation,

partly in vertical transverse section on line 3 3, Fig. 2. Fig. -t is arear elevation of the going and striking trains of the clock with therear plate removed and drawn on a larger scale. Fig. 5 is also a rearelevation showing the parts of the going-train only. Figs. 6, 7, and 8are detail rear elevations of the striking-train for the full and halfhours, showing, respectively, the position of the parts before and afterstriking the half-hou rs and after striking the full hours. Figs. i) andlO are respectively a vertical transverse section on line 9 9, Fig. l0,and a rear elevation of the mechanism by which the strokes of thefull-hour-striking mechanism are retarded.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A A represent the frame of my improvedelectric clock,which is attached to an upright face-plate B and whichconsists of a front plate A, that is made in one casting with its studsand brackets, and of a rear plate A', screwed to said studs. From ahorizontal stud b of the upper part of the supporting-frame A issuspended a pendulum P in the usual manner. The pendulum-rod P isengaged by the lower forked end of a crutch O, which is attached at itsupper end to a spindle CZ, that turns in bearings of thesupporting-frame A A. On the frame A A is mounted an electromagnet E,between the pole ends of which is arranged an oscillating armature E',which is centrally attached to the spindle d. The ends of the armatureE, as well as the adjacent polefaces of the cores of the electromagnetE, are made concentric to the axis of the spindle d, so that the ends ofthe armature can pass closely to said pole-faces as it is oscillated bythe beats of the pendulum P. On the crutch C is arranged a block f,which passes through an arc-shaped slot f in the rear plate A of thesupporting-frame and which is provided in its upper part with a V-shapedrecess that is engaged at certain intervals of time by a wedge-shapedpendant F, that is pivoted to the inner end of a fulerumed contact-leverF, the outer end of which is provided with an agate-heel f2, thatpresses on a contactspring F2, which is intermittently placed in contactwith another contact-spring F3, as

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shown in Figs. 4 and 5. The contact-springs F2 F3 are insulated from theframe A of the clock, the spring F2 being connected with one pole of aprimary battery and the spring F3, through the coils of theelectromagnet F,with the other pole of the same, said battery beingpreferably located in the base B of the clock-case, as shown in Figs. 2and .3, in which the batteryis arranged in a removable drawer B2, thatis provided with suitable contactsprings that are electrically connectedwith the contact-springs F2 F2. lVhenever the contact-spring F2 ispressed against the contact-spring F3 by the action of the fulerumedlever F', the current from the battery will 'flow from one pole otl thesame to the contactspring F2, to the contactspring F3, through the coilsof the electromagnet vE to the metallic frame A A, and to the other poleof the primary battery, as shown by dotted lines and arrows in Figs. 2and a. As soon as the circuit of the electric battery is closed thecurrent energizes the electromagnet E, so that the poles of the sameattract the armature E' and impart an oscillating motion to it and toits spindle (Z. Vhen the pendulum P swings at full beat, the blockf onthe crutch of the pendulum clears the point of the pendant F; but whenthe beats of the pendulum get gradually smaller the block will not beable to swing clear of the pendant F, but will be engaged by the pointof the latter, which drops into the V -shaped recess in the upper partof the block, so that when the crutch arrives in its vertical positionthe contact-lever F is oscillated on its fulerum, the contact-spring' F2placed in contact with the spring F2, the circuit of the battery isclosed, and the armature attracted by the poles of the eleetromagnet E,so that an impulse is imparted to the pendulum by the oscillating motionof the armature E', as is fully described in my prior patent referredto.

To the spindle d of the crutch C is applied a fixed arm d, to which ispivoted a pawl d2, that engages the main ratchet-wheel G of thegoing-train of the clock. A eheck-pawl g prevents the ratchet-wheel Gfrom turning in the opposite direction, said check-pawl being pivoted tothe supporting-frame of the clock. The cheek-pawl g is curved in such amanner that it 'forms contact with the pawl cl2 when the same is movedwith the crutch over the teeth ot the ratchet-wheel G, so as to belifted out of the teeth and engage on the opposite motion of the crutchonly one tooth of the ratchet-wheel for each driving-beat ot thependulum.

The pivotal connection of the driving-pawl with the arm d forms a kindof toggle-joint movement on the forward motion of the pendulum, and themovement et the pawl is thereby automatically regulated, the stroke oti's point being always sufficient to move the ratchet-wheel G one tooth,and in case the pendulum makes an excessively long stroke the upwardbend of the toggle-joint prevents a correspondingly long stroke of thepawl. \Vhen the pendulum swings too far in the other direction, thedriving-pawl d2 will ride up on the cheek-pawl g and will be lifted outvet' engagement with the ratchet-wheel G and prevented from engagingmore than one tooth foreach double beat ol' the pendulum. As thedriving-pawl (Z2 engages for each double beat of the pendulum one toothol' the ratchetwheel G, the latter is thereby moved step by step on itsaxis and imparts, by an intermediate transmitting mechanism, rotarymotion to the arbor of the minute-hand and from the same, by the usualgear-wheel mechanism, to the arbor of the hour-hand. rlhemotiontransmitting mechanism by which the rotary motion of the drivingratchet wheel G is transmitted to the hands differs in some respectsfrom the ordinary gear-wheel transmitting-trains of clock-movements, andis composed of a worm g2, that is placed on the shaft g of theratchet-wheel G, said worm engaging a worm-wheel g2, that is keyed to aworm-shaft g4, which is supported in suitable neck and step bearings ofan auxiliary bracket-plate A2, attached by suitable posts on the frontplate A. To the lower end of the worm-shaft g4 is applied a worm g5,which meshes with a worm-wheel g, that is placed loosely on the arbor Q7of the minute-hand, said worm-wheel ji being pressed by a helical springg2, interposed between a iixed collar g5 and the hub of a double cam N2,attached to the arbor g?, so that thel arbor of the minutehand can befreely turned Afor the purpose of setting' the hands of the clock, asthe loose worm-wheel g cannot transmit the motion of the minute-hand tothe transmitting wormgear and driving ratchet-wheel. rlhis is neeessaryfor the reason that the going-train is not provided with an escapement,as in ordinary cloek-trains, by which the transmittingtrain ot'gear-wheels is prevented from following the motion ot the minute-arbor.lly the loose worm-wheel g and the spring g2 acting thereon the motionof the arbor of the minute-hand is not transmitted to the going-train,while at the same time the number el parts of the going-train areconsiderably reduced and its construction simplified.

The mechanism so far described Vforms an electrical clock in which thegoing-train is driven by intermittent electric impulses imparted by aprimary battery. In addition to driving the going-train thebattery-power is also used for striking the full and half hours. Thestriking mechanism is composed of three main parts-a striking-wheel H,an elbowshaped striking-arm Il', anda striking-linger H2. Thestriking-wheel H is keyed to a separate shaft supported in bearings ot'the front plate A and auxiliary plate A2. The striking-arm Il' ispivoted to the shaft of the striking-wheel adjacent thereto, while thestriking-nger H2 is fulcrumed to a pin n on the front plate A, as shownin Fig. l0.

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the lower end of the striking-'arm H is pivoted a spring-actuated anddouble-toothed push-pawl HX, that is moved intermittently intoengagement with the teeth of the striking-wheel H. intermittent motionisimparted to the striking-wheel H by a driving-pawl d2, that is pivotedto the arm d on the pivotpin d adjacent to the driving-pawl d2, thedriving-pawl d2 being made broader at its lower end, so as to extendover the strikingarm H', the striking-wheel H, and the strikingiingerH2, as shown in Fig. 9.

The circumference of the striking-wheel H is divided into a number ot'groups of teeth corresponding to the number of strokes ot the clock fromone to twelve, said groups of teeth consisting of one, two, and so on upto twelve teeth, each group being separated from the next adjacent groupby a recess that is formed by removing one tooth, so that when thestriking-wheel H is turned entirely on its axis, which takes place oncein every twelve hours, all the hours have been struck by the strikingmechanism. The teeth ot' the strikingwheel H are engaged by adoubletoothed check-pawl H3, which is fulcrumed to the front plate A,and the upper end of which acts, when lifted by the teeth of thestrikingwheel, on a contact-spring h2 so as to press the same against asecond contact-spring 7L", that is attached to the front plate A andinsulated from the same. The check-pawl H2, like the push-pawl HX, isdouble-toothed, so as to be always in engagement with one ot the teethof the striking-wheel H. The contact-spring h4 is electrically connectedwith .one coil of an electromagnet M, that is supported on a bracket atthe lower part of the supporting-plate A, the other coil ot which isconnected with the main wire that passes from the battery to thecontact-spring F2, as shown in Fig. et. The contact-spring h3 isattached without insulation direct to the metallic front-plate A of theframe, and thereby electric connection made through the same and theother main wire with the other pole of the battery.

The armature M of the electromagnet M is pivoted at one end to the frontplate A and attracted by the poles ot' the electromagnet M whenever thedouble-toothed check-pawl H3 is actuated by the teeth of thestrikingwheel H, so that the contact-springs h2 It* are placed incontact with each other and thereby in circuit with the battery. Thetree end ot the armature M engages by a pin m a short arm m of aspring-pressed striker M2, that is pivoted to the front plate A sidewiseot the electromagnet E, as shown in Fig. a, and that gives a quick blowon a spiral gong M3, which is mounted on the face-plate B, as shown inFigs. 2 and 3.

Below the lower end ot' the striking-arm H is arranged a V-shaped piecel, which is tulcrumed to the front plate A and which is acted upon by aspring t, that presses one arm ot the V-shaped piece I against the arborg2 of the minute-hand. One arm of the V- shaped piece l is acted upon bya cam-pin t2 on the arbor Q7, which pin is located diametricallyopposite to an actuating-cam t' on said arbor, as shown in Fig. 6. Thecam-pin t2 presses, whenever the full hours are to be struck, on theadjacent arm of the V-shaped piece l, so that its other arm clears thelower end ot the striking-arm H, as shown in Fig. 8, and permits it tobe moved in downward direction by the tension of its spring h5 untilarrested by a stop-pin 7L on the front plate A. lVhen the striking-arm His placed in this position, a tooth t at its upper end is placed in linewith the second tooth of that group of teeth on the striking-wheelcorresponding to the hour to be struck. In this position ot thestriking-arm H the full hours are struck without interference by theupper end of the striking-arm by the action of the do Libie-toothed pawlHS on the contact-springs 7b3 h4 and the striking mechanism placed inelectric circuit with the same.

To the arbor n of the striking-finger H2 is attached adownwardly-extending wire arm N, which is curved at its lower end andplaced in engagement with the double cam N2 on the arbor of theminute-hand Q7. The double cam N2 is provided with shoulders n2 atdiametrically opposite points, as shown in Figs. at and lO, whichshoulders act on the lower end of the arm N at intervals of everyhalf-hour, so as to raise the arm N, together with the striking-lingerH2 and by the latter the driving-pawl cl2, out of engagement with theteeth on the striking-wheel and with the upper end ot the striking-armH. The striking-finger H2 has an enlarged or bulging portion a back ofits outermost end or point, over which bulging portion the driving-pawlmoves to and fro with the beats of the pendulum until the lower end ofthe arm N is permitted to drop again at the end of the halt-hour bypassing over one of the shoulders n2. The striking-finger H2 is providedwith a laterally-projecting pin nx, that engages with a notched wheel N,which is keyed to the hub of the spur-wheel G of the goingtrain, asshown clearly in Figs. 9 and l0.

The wheel N is provided with notches in its circumference, into whichthe pin nx drops whenever full hours or halt-hours are to be struck. Thenotches on the wheel N are separated by unnotched portions,which aremadc of such a size that it takes three full beats ot the pendulumbefore the pin nx drops into the next notch. By making the unnotchedportions of the wheel greater or smaller it takes either a greater or asmaller number ot' beats ot the pendulum until the pin fax drops intothe next notch. The notched wheel N serves for the purpose of impartinga slow stroke to the striking mechanism. If the notched wheel N were notprovided, the striking mechanism would be operated with every alternatebeat of the pendulum when striking full hours, as a stroke would begiven with IOO IIO

every alternate beat of the pendulum which would produce a too quicksuccession of strokes, especially when short pendulums are used, as inmantel-clocks. Any desired interval of time may thus be obtained betweenthe strokes by varying the size of the unnotched portions or, in otherwords, the distance between the notches of the wheel N.

The strokes for the full or half hours are produced when the lowercurved end of the arm N drops over the shoulder n2 of the cam N2 ontothe thinner portion of the cam, in which case the striking-linger H2 islikewise dropped in downward direction, so that its pin nx is locatedfor two single beats ef the pendulum in one of the notches, but duringthe other four single beats on the next adjacent unnotched portion ofthe wheel N, so that the driving-pawl d3 cannot engage the teeth of thestriking-wheel, and that consequently a stroke is given at every thirddouble beat of the pendulum.

Vhen a full hour is to be struck, the drivingpawl (Z3 engagessuccessively all the teeth of a group on the striking-wheel H until itdrops into the next recess. After the full hour is struck thestriking-arm H is in the position shown in Fig. S, while the push-pawlHX, pivoted to its lower end, is moved out of engagement with the teethof the striking-wheel by a pin hX on the front plate A. Shortly afterthe full houris struck the cam Ngraises the arm l and thestriking-linger H2 again, so that the driving-pawl d3 is lifted by thebulging portion of the striking-finger N into raised position, so thatduring its to-and-fro motion it is out of engagement with the teeth ofthe striking-wheel H. Before this lifting action takes place thedriving-pawl cl3 moves to and fro in one of the recesses between thegroups of teeth on the striking wheel H. lVhen the half-hour is to bestruck, the cam t' on the arbor gT forms contact with the lower end ofthe striking-arm H and produces thereby the lifting of the same, so thatthe tooth t at its upper end is moved sidewise of one of the recessesbetween the groups of teeth on the striking-wheel H, as shown in Fig.(5. Simultaneously therewith the push-pawl H is returned into engagementwith the teeth of the striking-wheel H, and then the arm N of thestriking-finger H2 is dropped into one of the depressions of the doublecam N2, so as to enable the broad end of the drivin g-pawl d to drop onthe next backward beat of the pendulum into the notchv of thestriking-arm H and to move by the forward beat of the pendulum thestriking-arm H, together with the strikingwheel H, which is engaged bythe push-pawl H for the distance of one tooth. The striking-wheel Hraises by this motion the doubletoothed cheek-pawl H3, which actuatesthe contact-sprin gs h3 77,L and produces thereby the striking of thehalf-hour. While the upper end of the striking-arm H is moved, its lowerend is'raised and engaged by the V-shaped piece l, which is pushed byits spring t" under the lower end of the striking-arm H', so as to holdit in position and prevent the drivingpawl d3 from engaging any one ofthe teeth of the striking-wheel, as during the following beats of thependulum the drivng-pawl moves to and fro on the cam-shaped portion ofthe upper end of the striking-arm H until the strikin g-iinger H2 isagain raised by the double cam N2 and the driving-pawl lifted out of thenotch of the striking-arm H. ln this position of the striking-arm H thelatter is ready to drop down again on the pushing away of the V-shapedpiece l from below the lower end ofthe striking-arm, so as to permit itto strike the full hours.

f After all the strokes of the full hours are struck the notched wheel Ncontinues to act for a short time on the striking-finger H2 anddriving-pawl (Z3, and alternately raises and drops them until thestriking-finger H2 is lifted again by its cam N2 and thereby thedriving-pawl (Z5 placed out of engagement with the teeth of thestriking-wheel and the tooth on the striking-arms H. Before the liftingof the driving-pawl (Z3 by the strikingfinger HL the driving-pawl cl3moves to and fro in the recess between the group of teeth of the fullhour without exerting any action on the striking mechanism. The strikingmechanism produces thus not only the effective striking ef the fullhours, but also the striking of the half-hours. The single stroke forthe half-hour and the slow succession of strokes for the full hours onthe gong is similar to the striking of the half and full hours inordinary clocks, so that a clock is obtained that has all thecharacteristics of ordinary spring or weight driven clocks, but theadvantage that the winding is dispensed with and the going power as wellas the striking mechanism operated by the electromotive force of thebattery. rlhe battery employed is preferably a so-called dry battery,which is renewed from time to time when it has run down. The movement iscomposed of a much smaller number of parts, as in ordinary springclocks,as there is a smaller number of gearwheels required, whereby thismovement can be made smaller and cheaper, so that the clock can beplaced in competition even with the ordinary spring-clocks in generaluse.

Having thus described my invention, l claim as new and desire to secureby Letters Patentl. In an electric clock, the combination with anoscillating pendulum and its crutch, of a main ratchet-wheel for thegoing train, an arm on the spindle of the crutch, a drivingpawl pivotedto said arm, and a curved checkpawl arranged ad jacent to and underneathsaid driving-pawl, said driving-pawl riding over said check-pawl so asto engage one tooth only of the ratchet-wheel at each driving beat ofthe pendulum, the pivot of the pawl on the arm causing a toggle actionon an excessive IOO IIO

stroke of the pendulum which prevents said pawl from pushing theratchet-wheel more than one tooth.

2. In an electric clock, the combination of an oscillating pendulum, acrutch actuated thereby, a striking-train, the striking-wheel of whichis provided with groups of teeth for striking the hours, and withintermediate recesses between said groups of teeth, a striking-armprovided with a tooth for striking the half-hours, means for actuatingsaid strikingarm to bring its tooth opposite said recesses, meansconnected with the pendulum for operating the striking-wheel forstriking the hours, means connected with the arbor of the minute-handfor actuating the striking-arm to operate the striking-wheel forstriking the half-hours, a double-toothed check-pawl engaging the teethof the striking-wheel, and a striking mechanism operated by saidcheckpawl.

3. In an electric clock, the combination of an oscillating pendulum, acrutch actuated thereby, a striking-train, the striking-wheel of whichis provided with groups of teeth for striking the hours and withintermediate recesses between said groups of teeth, a striking-armprovided with a tooth for striking the half-hours, means for actuatingsaid strikingarm to bring its tooth opposite said recesses, meansconnected with the pendulum for operating the striking-wheel forstriking the hours, means connected with the arbor of the minute-handfor actuating the striking-arm to operate the striking-wheel forstriking the half-hours, a double-toothed check-pawl engaging the teethof the striking-wheel, and an electric striking mechanism operated bysaid check-pawl.

4. In an electric clock, the combination with an oscillating pendulumand its crutch, operated intermittently by electric impulses, of astriking-wheel provided at its circumference with groups of teeth andintermediate recesses between said groups of teeth, a driving-pawlengaging the teeth of the strikingwheel, a striking-arm pivoted to theshaft of the striking-wheel and provided with a single tooth and acam-shaped portion at its upper end, a fulcrumed striking-fin ger, adoubletoothed push-pawl pivoted to the lower end of the striking-arm, acam for actuating said striking-arm and push-pawl, and means for lockingthe striking-arm in raised position for permitting the striking of thehalf-hours by the position of the tooth on the striking-arm adjacent tothe recesses between the groups of teeth, substantially as set forth.

5. In an electric clock, the combination with an oscillating pendulumand its crutch, of a driving-pawl, a striking-train the main wheel ofwhich is provided with groups of teeth and intermediate recesses betweensaid groups of teeth, a striking-arm pivoted to the shaft of thestriking-wheel, and provided with a single tooth and a cam-shapedportion at its upper end, means for retaining the strikingarm in raisedposition, a cam-piu on the minute-arbor for releasing theretaining-piece, a striking-finger fulcrumed to the frame and providedwith a downwardly-extendiug arm, a double cam on the minute-hand arborengaging said arm, a notched wheel placed on the arbor of the goingspur-wheel and a striking-finger provided with a pin that drops into thenotches of said wheel for permitting the striking of the full hours withslow or retarded strokes, substantially as set forth.

G. In an electric clock, the combination, with an oscillating pendulumand its crutch, of a drivingpawl for the striking train broader at itslower end, a striking-wheel provided with groups of teeth at itscircumference and intermediate recesses between said groups of teeth, astriking mechanism operated by said striking-wheel, a striking-armpivoted to the shaft of the striking-wheel, a double-toothed push-pawlpivoted to the lower end of the striking-arm, a cam on the minute-arborengaging the lower end of the striking-arm, and a strikin g-fin gerfulcrumed to the frame and provided with a downwardlyextending arm, adouble cam on the minutearbor engaging said arm, the broader lower endof the driving-pawl engaging intermittently the striking-wheel andstriking-arm for producing the striking of the full and half hours,substantially as set forth.

7. In an electric clock, the combination, with an oscillating pendulumand its crutch, of a driving-pawl at its lower end, a strikingwheel ofwhich is provided with groups of teeth at its circumference andintermediate recesses between said groups of teeth, a striking-armpivoted to the shaft of the strikingwheel and provided with a singletooth and a cam-shaped portion at its upper end,a springactuatedpush-pa-wl pivoted to the lower end of the striking-arm, a fulcrumed andspringactuated V-shaped piece engaging intermittently the lower end ofthe striking-arm, a cam on the minute-arbor, a cam-pin on said arbordiametrically opposite to said cam, said cam and cam-pin engagingrespectively the lower end of the strikingarm and the V- shaped piece ofthe same for setting the parts in position for striking respectivelyhalf and full hours, substantially as set forth.

8. In an electric clock, the combination, with an oscillating pendulumand its crutch, of a driving-pawl, a striking-train consisting of astriking-wheel having groups of teeth at its circumference, andintermediate recesses between said groups of teeth, a striking-armpivoted to the shaft of the striking-wheel, a striking-finger fulcrumedto the frame and provided with a downwardly-extending arm, a double canifor dropping the striking-finger every ralf-hour, a notched wheel on thearbor of the main ratchet-wheel of the going train and a pin on thestriking-finger adapted to drop intermittently into the notches of thenotched wheel, said striking-finger being provided with an enlarged orbulging portion for IOO IIO

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raising the driving-pawl out of engagement with the striking-Wheel andstriking-arm,substantially as set forth.

9. In an electric clock, the combination, with an oscillating pendulumand its crutch, of a driving-pawl having a broad lower end, astriking-train consisting ofa striking-wheel, a-striking-arm pivoted tothe shaft of said striking-wheel,an electrically-operated strikingmechanism, means for operating said striking mechanism by thestriking-wheel, a spring-actuated push-pawl pivoted to the lower end ofthe striking-arm, a pin for arresting the downward motion of thestrikingarm, and a pin for engaging the double-pointed push-pawl andwithdrawing it from the teeth of the striking-wheel preparatory tostriking the full hours, substantially as set forth.

l0. In an electric clock, the combination with an oscillating pendulumand its crutch, of a striking-train composed of a strikingwheel havinggroups of teeth at its circumference and intermediate recesses betweensaid groups of teeth, a striking-arm pivoted to the shaft of thestriking-wheel, a strikingfinger I'ulcrumed to the frame and providedwith a downwardly-extending arm, a double cam on the minute-arbor foractuating the striking-finger, and a double-toothed checkpawl engagingthe teeth of the striking-wheel, a circuit-closing device actuated bysaid check-pawl, a driving-pawl pivotcd to an arm on the crutch andbeing made broad enough to extend over the striking-wheel, striking-armand striking-finger, a notched wheel on the arbor or" the mainratchet-wheel of the going train, said wheel being provided with notchedand unnotched portions, a pin on the strikingfinger adapted to drop intothe notch and move over the unnotched portions ofthe striking-wheel, aV-shaped piece engaging the lower end of the striking-arm, and a cam-pinon the minute-arbor for moving said V -shaped piece clear ofthe lowerend of the strikingarm, i'or permitting the striking of the full hoursat a slow stroke by the joint action oi' the striking-wheel,striking-arm and strikin g-finger on the drivin g-pawl of the strikintrain, substantially as set forth.

In testimonyT that I claim the foregoing' as myinvention I have signedmy name inprcsence of two subscribing witnesses.

SIGISMUND FISCHER.

Witnesses:

PAUL GoErnL, Guo. W. Jknnnn.

